Enhancing pollutant removal and electricity generation in Sediment Microbial Fuel Cell with nano zero-valent iron

Oktavitri, Nur Indradewi; Nakashita, Shinya; Hibino, Tadashi; Tran, Thanh Van; Jeong, Ilwon; Oh, Tae-Geon; Kim, Kyunghoi

doi:10.1016/j.eti.2021.101968

Cited by 14 publications

(9 citation statements)

References 41 publications

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“…3, p > 0.05). Oktavitri et al [21] demonstrated that 0.06% of nano-zero-valent iron amendment to sediment increased current density, whereas 0.6% amendment did not because alkalinity resulting from high rates of Fe amendment weakened the exoelectrogen activity. Such a pH increment did not result from Fe addition in our study.…”

Section: Effects Of Fe Oxide Addition On Bioelectricity Generationmentioning

confidence: 99%

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Iron-Added Sediment Microbial Fuel Cells to Suppress Phosphorus Release from Sediment in an Agricultural Drainage

Perera,

Maeda,

Somura

et al. 2023

J. of Wat. & Envir. Tech.

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Phosphorus (P) release from sediment caused eutrophication in Kojima Lake, Japan. The efficiency of iron-added sediment microbial fuel cells (SMFCs) in regulating P release from agricultural drainage sediment was investigated in this study. Surface sediment collected from an agricultural drainage canal flowing into Kojima Lake was mixed with iron oxide (Fe 2 O 3 ) or amorphous iron oxyhydroxide (FeOOH) at 50 mmol kg −1 . A 14.6-cm high acrylic pipe was filled with 80 mL of deionized water after 130 g of sediment was placed. A 3 × 3 cm graphite felt was used for the anode in a dual chamber SMFC, while a carbon rod was used for the cathode. Three treatments: No Fe, Fe 2 O 3 , and FeOOH, were operated for 408 h under open or closed circuit conditions. Results showed that FeOOH addition lowered P release from sediment regardless of SMFC operational conditions, suggesting that higher P adsorption by FeOOH may mask the effect of SMFCs. Fe 2 O 3 did not reduce total P concentration in the overlying water. In addition, electricity generation was not enhanced by Fe-added SMFCs. Although SMFCs increased sedimentary redox potential, P release was not suppressed by the SMFC operation, indicating that organic P would be released by SMFCs from P-rich sediment.

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Section: Effects Of Fe Oxide Addition On Bioelectricity Generationmentioning

confidence: 99%

“…The effectiveness of pollutant remediation, power generation, and organic matter degradability of SMFCs vary depending on sedimentary properties [21]. The electrons produced by microbial metabolism should be efficiently transferred to the anode to avoid Eh reduction and suppress P release.…”

Section: Introductionmentioning

confidence: 99%

Iron-Added Sediment Microbial Fuel Cells to Suppress Phosphorus Release from Sediment in an Agricultural Drainage

Perera,

Maeda,

Somura

et al. 2023

J. of Wat. & Envir. Tech.

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“…The integration of an anodic Fenton process similar to that tested in MFCs for highly organic contaminated wastewater treatment could be helpful to oxidize higher-chain PHs to release stress in the soil [156]. Furthermore, the zerovalent iron (ZVI) treatment of PH-contaminated soil before BES application can also be tested to obtain a high PH degradation within a short period [157,158]. Finally, it is highly important now to conduct a life cycle and life cycle cost analysis to evaluate the maturity and readiness of this technology for field-scale applications.…”

Section: Current Challenges and Future Perspectivesmentioning

confidence: 99%

Bioelectrochemical Remediation for the Removal of Petroleum Hydrocarbon Contaminants in Soil

2022

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Consistent accumulation of petroleum hydrocarbon (PH) in soil and sediments is a big concern and, thus, warrants a static technology to continuously remediate PH-contaminated soil. Bioelectrochemical systems (BESs) can offer the desired solution using the inimitable metabolic response of electroactive microbes without involving a physiochemical process. To date, a wide range of BES-based applications for PH bioremediations under different environmental conditions is readily available in the literature. Here, the latest development trend in BESs for PH bioremediation is critically analyzed and discussed. The reactor design and operational factors that affect the performance of BESs and their strategic manipulations such as designing novel reactors to improve anodic reactions, enhancing soil physiology (electrical conductivity, mass diffusion, hydraulic conductivity), electrode modifications, operational conditions, microbial communities, etc., are elaborated to fortify the understanding of this technology for future research. Most of the literature noticed that a low mass diffusion condition in soil restricts the microbes from interacting with the contaminant farther to the electrodes. Therefore, more research efforts are warranted, mainly to optimize soil parameters by specific amendments, electrode modifications, optimizing experimental parameters, integrating different technologies, and conducting life cycle and life cycle cost analysis to make this technology viable for field-scale applications.

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“…The extraction of electricity from organic waste through the system of sediment microbial fuel cells (SMFCs) is strongly dependent on the ability of exoelectrogens in the sediment to carry out electrochemical reactions. The SMFC system accelerates the decomposition of organic material in the sediment and generates protons and electrons through microbial metabolism activity in order to produce sustainable bioelectricity [ 13 ]. The system transfers electrons from the anode to the cathode, while the protons diffuse from the anodic region into the overlying water and eventually reach the cathodic region.…”

Section: Introductionmentioning

confidence: 99%

“…The concentration of organic matter in the sediment primarily affects the overall performance of the SMFC system [ 14 ]. Improving the anodic region of the SMFC system benefits the bioremediation of contaminated sediments [ 13 , 14 ] and environmental monitoring [ 15 ], as the SMFC system can efficiently convert organic substrates into electricity. SCGs are a biowaste with a high content of organic matter and nutrients [ 4 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Spent Coffee Grounds for Bioelectricity Generation in Sediment Microbial Fuel Cells

Mohd Noor,

Jeong,

Yoon

et al. 2024

Microorganisms

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This study examined the utilization of spent coffee grounds with different aqueous extraction methods for the bioelectricity generation from coastal benthic sediment through a sediment microbial fuel cell (SMFC) system. Different methods for the aqueous extraction of SCGs were evaluated, including rinsing and drying of the SCG (SMFC-CRD), immersion, rinsing and drying (SMFC-CRID), drying alone (SMFC-CD), and untreated SCG (SMFC-C). The caffeine concentration in the SCG was significantly reduced using pretreatments, with SMFC-CRID achieving the lowest concentration of 0.021 ± 0.001 mg/g. SMFC-CRD contributed to the generation of the highest current density of 213.7 mA/m2 during closed-circuit operation and exhibited the highest power density of 96.9 mW/m2 in the polarization test, due to the suitable caffeine content of 0.275 ± 0.001 mg/g in the SCG. This study could provide a cost-effective method for reusing SCGs (i.e., 128 g) while generating bioelectricity as an alternative energy source. These results suggest that pretreatment with SCGs is essential for achieving optimal power density and reducing the caffeine concentration in the SMFC system.

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Enhancing pollutant removal and electricity generation in Sediment Microbial Fuel Cell with nano zero-valent iron

Cited by 14 publications

References 41 publications

Iron-Added Sediment Microbial Fuel Cells to Suppress Phosphorus Release from Sediment in an Agricultural Drainage

Iron-Added Sediment Microbial Fuel Cells to Suppress Phosphorus Release from Sediment in an Agricultural Drainage

Bioelectrochemical Remediation for the Removal of Petroleum Hydrocarbon Contaminants in Soil

Utilization of Spent Coffee Grounds for Bioelectricity Generation in Sediment Microbial Fuel Cells

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